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INTERFERENCE FROM DECT FIXED WIRELESS
ACCESS (FWA) TO UNLICENSED PERSONAL
COMMUNCIATIONS SERVICES (UPCS)

IX Meeting of the Permanent
Consultative Committee III:

Radio Communications
September 22-26, 1997
Mexico City, Mexico

Dr. Jay E. Padgett
Lucent Technologies Bell Laboratories

BACKGROUND

• PCC-III Interference Experts Group is working to understand interference
impact of fixed wireless access (FWA) operating in the 1910-1930 MHz
band.

• In the U.S., 1910-1930 MHz is allocated to Unlicensed Personal
Communications Services (UPCS).

• One question is whether, from an interference perspective, UPCS and
FWA can coexist in the same band.

• Most of the Group’s efforts thus far have concentrated in interference
from FWA to Licensed PCS in bands adjacent to 1910 and 1930 MHz.

• This contribution analyzes the cochannel interference from FWA to UPCS
based on the parameters and propagation model previously adopted by the
Group, and assuming the UPCS system uses Dynamic Channel Selection
to choose the least-interfered channel.

Inter-American Telecommunication Commission 365